Cyclone dust collecting apparatus for vacuum cleaner

Abstract

The present disclosure relates to a cyclone dust collecting apparatus for a vacuum cleaner having a high fine dust collecting efficiency. The cyclone dust collecting apparatus includes a first cyclone having an air suction hole through which dust-laden air is drawn-in, the first cyclone forcing the dust-laden air to downwardly whirl in a space under the air suction hole so as to centrifugally separate dust from the dust-laden air; a second cyclone disposed inside the first cyclone, the second cyclone forcing semi-clean air entering from the first cyclone to downwardly whirl so as to centrifugally separate fine dust from the semi-clean air; and an air guiding member forcing the semi-clean air discharged from the first cyclone to directly enter the second cyclone and, the air guiding member having a plurality of guiding blades radially disposed in at least one circular shape based on a vertical axis of the second cyclone.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS[0001]This application claims the benefit of U.S. provisional application No. 60 / 776,408 filed Feb. 24, 2006 in the United States Patent & Trademark Office, and claims the benefit of Korean Patent Application Nos. 2006-20961 filed Mar. 6, 2006 and No. 2006-31518 filed Apr. 6, 2006 in the Korean Intellectual Property Office, the disclosures of all of which are incorporated herein by reference in their entirety.BACKGROUND OF THE INVENTION[0002]1. Field of the Invention[0003]The present disclosure relates to a vacuum cleaner. More particularly, the present disclosure relates to a cyclone dust collecting apparatus separating and collecting dust and dirt using centrifugal force.[0004]2. Description of the Related Art[0005]Generally, the vacuum cleaner generates suction force using a motor so as to draw-in air containing dust, dirt and so on (hereinafter, referred to as dust-laden air) from a surface to be cleaned by the suction force. Dust, dirt and...

AI Technical Summary

Benefits of technology

"The present disclosure provides a cyclone dust collecting apparatus for a vacuum cleaner that has a smaller pressure loss and higher fine dust collecting efficiency compared to conventional apparatus. The apparatus includes a first cyclone with an air suction hole and a second cyclone disposed inside the first cyclone. An air guiding member is used to force the semi-clean air from the first cyclone to downwardly whirl in a space under the air suction hole and centrifugally separate dust from the dust-laden air. The apparatus also includes an air discharging pipe and a dust collecting receptacle to collect the dust separated from the first and second cyclones. A sealing member and a backflow preventing member are also included to prevent dust from flowing back and ensure efficient dust collection."

Problems solved by technology

However, the conventional cyclone dust collecting apparatus cannot separate fine dust well from the dust-laden air because there is a little difference between weights of the fine dust and the air.

However, the conventional multi-cyclone dust collecting apparatus has a problem that a great pressure loss occurs when the dust-laden air is drawn-in from an inner cyclone to an outer cyclone.

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